/Engine/Plugins/Media/MediaIOFramework/Source/MediaIOCore/Public/MediaIOCoreSamples.h
FetchSubtitle
virtual bool FetchVideo ( [TRange](API\Runtime\Core\Math\TRange)< [FTimespan](API\Runtime\Core\Misc\FTimespan) > TimeRange, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IMediaTextureSample](API\Runtime\Media\IMediaTextureSample), ESPMode::ThreadSafe > & OutSample )